scholarly journals Advances in understanding calcite varve formation: new insights from a dual lake monitoring approach in the southern Baltic lowlands

Boreas ◽  
2021 ◽  
Author(s):  
Patricia Roeser ◽  
Nadine Dräger ◽  
Dariusz Brykała ◽  
Florian Ott ◽  
Sylvia Pinkerneil ◽  
...  
Keyword(s):  
Lake Monitoring ◽  
Southern Baltic

Differences in calcite varve formation discerned by a dual lake monitoring approach in the southern Baltic lowlands

2020 ◽  
Author(s):  
Patricia Roeser ◽  
Nadine Dräger ◽  
Dariusz Brykała ◽  
Florian Ott ◽  
Sylvia Pinkerneil ◽  
...  
Keyword(s):  
Data Set ◽  
Lake Monitoring ◽  
Control Factors ◽  
Climate And Environmental Change ◽  
Depositional Processes ◽  
Ne Germany ◽  
Human Habitat ◽  
New Findings ◽  
Seasonal Deposition ◽  
Southern Baltic

<p>Varved lake sediments are valuable archives for reconstructing climate and environmental change in the human habitat at seasonal resolution. However, it is still not fully understood which factors control varve thickness and, consequently, varve proxy records are differently interpreted with respect to their climatic significance. Here we present, for the first time, a dual lake monitoring in two lakes forming calcite varves to provide new insights into the seasonal depositional processes forming these varves. The study lakes, Tiefer See (TSK) in NE Germany and Czechowskie (JC) in N Poland, are located a few hundred km away from each other in the southern Baltic lowlands. This is an ideal test region for this investigation because it holds the major known geographical cluster of calcite varve producing lakes. The lake basins are different in morphology and bathymetry and, therefore, are ideal to investigate common processes and local differences of seasonal deposition. The monitoring setup in both lakes is largely identical and included instrumental observation of (1) meteorological parameters, (2) chemical profiling of the lake water column including water sampling and analyses, and, (3) sediment trapping at both bi-weekly and monthly intervals. Finally, we compared our six-year monitoring time series with varve micro-facies of sediments deposited during this time at the lake bottom. Based on this robust data-set, we present and discuss new findings with respect to the seasonal deposition of endogenic calcite varves, as well as their limnologic control factors.</p>

Holocene diatom biostratigraphy of the SW Gulf of Gdańsk, Southern Baltic Sea (part III)

2008 ◽  
Vol 37 (4) ◽  
Author(s):  
Małgorzata Leśniewska ◽  
Małgorzata Witak
Keyword(s):  
Baltic Sea ◽  
The South ◽  
Gulf Of Gdańsk ◽  
The Baltic Sea ◽  
Southern Baltic Sea ◽  
Gulf Of Gdansk ◽  
Southern Baltic ◽  
The Baltic ◽  
Palaeoenvironmental Changes

Holocene diatom biostratigraphy of the SW Gulf of Gdańsk, Southern Baltic Sea (part III)The palaeoenvironmental changes of the south-western part of the Gulf of Gdańsk during the last 8,000 years, with reference to the stages of the Baltic Sea, were reconstructed. Diatom analyses of two cores taken from the shallower and deeper parts of the basin enabled the conclusion to be drawn that the microflora studied developed in the three Baltic phases: Mastogloia, Littorina and Post-Littorina. Moreover, the so-called anthropogenic assemblage was observed in subbottom sediments of the study area.

Integrated Research of the Southern Baltic Sea during Cruise 42 of the R/V AkademikNikolaj Strakhov

Oceanology ◽  
2020 ◽  
Vol 60 (4) ◽  
pp. 565-566
Author(s):  
D. V. Dorokhov ◽  
V. T. Paka ◽  
A. A. Kondrashov ◽  
I. Yu. Dudkov ◽  
M. F. Markiyanova
Keyword(s):  
Baltic Sea ◽  
Southern Baltic Sea ◽  
Integrated Research ◽  
Southern Baltic

scholarly journals Argo floats in the southern Baltic Sea

Oceanologia ◽  
2020 ◽  
Vol 62 (4) ◽  
pp. 478-488
Author(s):  
Waldemar Walczowski ◽  
Małgorzata Merchel ◽  
Daniel Rak ◽  
Piotr Wieczorek ◽  
Ilona Goszczko
Keyword(s):  
Baltic Sea ◽  
Southern Baltic Sea ◽  
Argo Floats ◽  
Southern Baltic

Fish as a winter reservoir for Vibrio spp. in the southern Baltic Sea coast

2021 ◽  
pp. 103574
Author(s):  
Lars Möller ◽  
Bernd Kreikemeyer ◽  
Gunnar Gerdts ◽  
Günter Jost ◽  
Matthias Labrenz
Keyword(s):  
Baltic Sea ◽  
Southern Baltic Sea ◽  
Southern Baltic ◽  
Vibrio Spp ◽  
Sea Coast

scholarly journals Sex and age-specific differences in wing pointedness and wing length in blackcaps Sylvia atricapilla migrating through the southern Baltic coast

2020 ◽  
Author(s):  
Agnieszka Ożarowska ◽  
Grzegorz Zaniewicz ◽  
Włodzimierz Meissner
Keyword(s):  
Wing Length ◽  
Sub Saharan Africa ◽  
Migration Route ◽  
Sylvia Atricapilla ◽  
Climatic Effects ◽  
Migration Distance ◽  
Baltic Coast ◽  
Southern Baltic ◽  
Sub Saharan ◽  
Migrating Birds

Abstract The blackcap Sylvia atricapilla shows a complex migratory pattern and is a suitable species for the studies of morphological migratory syndrome, including adaptations of wing shape to different migratory performance. Obligate migrants of this species that breed in northern, central, and Eastern Europe differ by migration distance and some cover shorter distance to the wintering grounds in the southern part of Europe/North Africa or the British Isles, although others migrate to sub-Saharan Africa. Based on ˃40 years of ringing data on blackcaps captured during autumn migration in the Southern Baltic region, we studied age- and sex-related correlations in wing pointedness and wing length of obligate blackcap migrants to understand the differences in migratory behavior of this species. Even though the recoveries of blackcaps were scarce, we reported some evidence that individuals which differ in migration distance differed also in wing length. We found that wing pointedness significantly increased with an increasing wing length of migrating birds, and adults had longer and more pointed wings than juvenile birds. This indicates stronger antipredator adaptation in juvenile blackcaps than selection on flight efficiency, which is particularly important during migration. Moreover, we documented more pronounced differences in wing length between adult and juvenile males and females. Such differences in wing length may enhance a faster speed of adult male blackcaps along the spring migration route and may be adaptive when taking into account climatic effects, which favor earlier arrival from migration to the breeding grounds.

scholarly journals The Effect of Abiotic Factors on Abundance and Photosynthetic Performance of Airborne Cyanobacteria and Microalgae Isolated from the Southern Baltic Sea Region

Cells ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 103
Author(s):  
Kinga Wiśniewska ◽  
Sylwia Śliwińska-Wilczewska ◽  
Anita Lewandowska ◽  
Marta Konik
Keyword(s):  
Baltic Sea ◽  
Abiotic Factors ◽  
Photosynthetic Performance ◽  
Culture Collection ◽  
Terrestrial Environment ◽  
Territorial Expansion ◽  
Southern Baltic Sea ◽  
Baltic Sea Region ◽  
Colonization Potential ◽  
Southern Baltic

Cyanobacteria and microalgae present in the aquatic or terrestrial environment may be emitted into the air and transported along with air masses over long distances. As a result of staying in the atmosphere, these organisms may develop a greater tolerance to stressful factors, but this topic is still relatively unknown. The main aim was to show an autecological characteristic of some airborne microalgae and cyanobacteria strains by a factorial laboratory experiment approach, including changes in irradiance, temperature, and salinity conditions. The additional purpose of this work was also to present part of the Culture Collection of Baltic Algae (CCBA) collection, which consists of airborne algae (AA) isolated from the atmospheric air of the southern Baltic Sea region. Altogether, 61 strains of airborne cyanobacteria and microalgae from the southern Baltic Sea region were isolated from May 2018 to August 2020. Selected microorganisms were tested in controlled laboratory conditions to identify their response to different irradiance (10–190 µmol photons m−2 s−1), temperature (13–23 °C), and salinity conditions (0–36 PSU). The highest numbers of cells (above 30 × 105 cell mL−1) were recorded for cyanobacterium Nostoc sp., and for diatoms Nitzschia sp., Amphora sp., and Halamphora sp. We found that for cyanobacterium Nostoc sp. as well as for green alga Coccomyxa sp. the maximum cell concentrations were recorded at the salinity of 0 PSU. Moreover, cyanobacteria Planktolyngbya contorta, Pseudanabaena catenata, Leptolyngbya foveolarum, Gloeocapsa sp., and Rivularia sp. were able to grow only at a salinity of 0 PSU. On the other hand, in the range of 16–24 PSU, the highest cell numbers of examined diatoms have been identified. Our research provided that deposited airborne microalgae and cyanobacteria showed full colonization potential. The present experiment suggests that the adaptive abilities of microorganisms, in particular those producing toxins, may contribute to the spread in the future. Thus, it may increase human exposure to their negative health effects. Any distinctive adaptations of the genera give them an additional competitive advantage and a greater chance for territorial expansion.

scholarly journals A system for the determination of surface water pCO2 in a highly variable environment, exemplified in the southern Baltic Sea

Oceanologia ◽  
2021 ◽  
Vol 63 (2) ◽  
pp. 276-282
Author(s):  
Marcin Stokowski ◽  
Przemysław Makuch ◽  
Krzysztof Rutkowski ◽  
Marcin Wichorowski ◽  
Karol Kuliński
Keyword(s):  
Surface Water ◽  
Baltic Sea ◽  
Variable Environment ◽  
Southern Baltic Sea ◽  
Southern Baltic
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